During the Yongle period of the Ming Dynasty, strange things happened frequently in Yingtian Mansion, and strange cases of "shadow puppets demanding their lives" appeared one after another. The deceased were all court officials, and they all received a strange shadow puppet before they died. Shen Qingfeng, the Jinyi Guardsman in charge of the case, has a strict personality but a "Conan constitution". He gets into trouble wherever he goes. Just when he is obsessed with the case, he accidentally meets Su Wanqing, a folk woman who is proficient in mechanism skills and cryptography. Su Wanqing may seem weak, but in fact she has an extremely high IQ and can discover key clues from the smallest details. Her father once died unjustly due to an old case, and this case seems to be inextricably linked to the "Shadow Puppet Claiming Life" case. From the initial testing of each other and distrust, to the tacit cooperation and joint investigation of the case, the two not only had to face complex cases, but also had to avoid the pursuit of the mastermind behind the scenes in the process of solving one mystery after another. As the investigation deepened, they discovered that there was a huge conspiracy hidden behind the "shadow puppet's death" case, involving the power struggle within the imperial court and a secret from many years ago. Can Shen Qingfeng's "Conan Physique" help them avert danger? Can Su Wanqing find out the truth about her father's unjust case? How will the two of them uncover the final secret and make the truth known to the world in the crisis-ridden officialdom of the Ming Dynasty?
